Aiming at hysteretic water bursting at the west belt way in Danhou mine, on the basis of analyzing the hydrogeologic data synthetically, the mechanism of hysteretic water bursting caused by minor fault was studied, the cause of hysteretic water bursting was analysed, and the countermeasure about preventing and treating O.

Through the statistical and theoretical analysis for the insitu examples of gobside entry retaining, the cut roof loads and deformations of the packfillings of gobside entry retaining which are revoked by the main roof breakage, are systematically studied under various conditions of the rock bodies surrounding roadway.